The HELI HRFD 450/6 axial high-performance fan from Helios is a powerful ventilation fan designed for demanding applications. With a cylindrical housing made of galvanized steel and flanges on both sides, this fan offers a robust and durable construction. The directly driven motor enables efficient performance, while the impeller with profiled plastic blades ensures optimized airflow. The dynamic balancing of the impeller guarantees quiet operation, while the closed design and low-noise ball bearings with long-term lubrication minimize maintenance efforts. The fan is designed for mains operation and can be controlled in speed through voltage reduction, making it a flexible solution for various ventilation needs.

• High-performance impeller with profiled blades for optimized airflow
• Dynamically balanced impeller for quiet operation
• Maintenance-free motor with thermal contacts for monitoring
• Robust construction made of galvanized steel
• Easy integration thanks to flanges on both sides and standardized hole patterns.